| | This week, EPA released two proposed rules amending the National Primary Drinking Water Regulations (“NPDWR”) for PFAS, which were finalized in April 2024. The first proposal would authorize water systems to request two additional years to comply with the Maximum Contaminant Levels (“MCLs”) for PFOA and PFOS in drinking water, and the second proposal would rescind the MCLs for four other PFAS: PFHxS, PFNA, HFPO-DA, and the conglomerate Hazard Index of those three chemicals combined with PFBS. To receive an extension under the first rule, systems will be required to submit recent PFAS sampling results, certify that they cannot comply with the MCLs by April 2029, and provide other information detailed further below. And systems with PFOA or PFOS testing results at or greater than 12 parts per trillion (“ppt”), will be required to commit to at least two forms of prescribed control measures. Those measures include steps to protect and provide notice to water system customers. |
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